package com.sky.service.impl;

import com.github.pagehelper.Page;
import com.github.pagehelper.PageHelper;
import com.sky.constant.MessageConstant;
import com.sky.constant.PasswordConstant;
import com.sky.constant.StatusConstant;
import com.sky.context.BaseContext;
import com.sky.dto.EmployeeDTO;
import com.sky.dto.EmployeeLoginDTO;
import com.sky.dto.EmployeePageQueryDTO;
import com.sky.entity.Employee;
import com.sky.exception.AccountLockedException;
import com.sky.exception.AccountNotFoundException;
import com.sky.exception.PasswordErrorException;
import com.sky.mapper.EmployeeMapper;
import com.sky.result.PageResult;
import com.sky.service.EmployeeService;
import org.springframework.beans.BeanUtils;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;
import org.springframework.util.DigestUtils;

import java.time.LocalDateTime;

@Service
public class EmployeeServiceImpl implements EmployeeService {

    @Autowired
    private EmployeeMapper employeeMapper;

    /**
     * 员工登录
     *
     * @param employeeLoginDTO
     * @return
     */
    public Employee login(EmployeeLoginDTO employeeLoginDTO) {
        String username = employeeLoginDTO.getUsername();
        String password = employeeLoginDTO.getPassword();

        //1、根据用户名查询数据库中的数据
        Employee employee = employeeMapper.getByUsername(username);

        //2、处理各种异常情况（用户名不存在、密码不对、账号被锁定）
        if (employee == null) {
            //账号不存在
            throw new AccountNotFoundException(MessageConstant.ACCOUNT_NOT_FOUND);
        }

        //密码比对
        // TODO 后期需要进行md5加密，然后再进行比对
        password = DigestUtils.md5DigestAsHex( password.getBytes() );
        if (!password.equals(employee.getPassword())) {
            //密码错误
            throw new PasswordErrorException(MessageConstant.PASSWORD_ERROR);
        }

        if (employee.getStatus() == StatusConstant.DISABLE) {
            //账号被锁定
            throw new AccountLockedException(MessageConstant.ACCOUNT_LOCKED);
        }

        //3、返回实体对象
        return employee;
    }
    /**
     * 新增员工
     *
     */
    public void save(EmployeeDTO employeeDTO) {
        //属性拷贝
        Employee employee = new Employee();
        BeanUtils.copyProperties( employeeDTO,employee);

        //创建时间和修改时间
//        employee.setCreateTime( LocalDateTime.now() );
//        employee.setUpdateTime( LocalDateTime.now() );

        //密码
        employee.setPassword( DigestUtils.md5DigestAsHex( PasswordConstant.DEFAULT_PASSWORD.getBytes() ) );

        //创建人ID和修改人id
        //TODO 先写死，后面修改,
        // 改好了
//         employee.setCreateUser( BaseContext.getCurrentId() );
//         employee.setUpdateUser( BaseContext.getCurrentId() );

        //状态
        employee.setStatus( StatusConstant.ENABLE );
        employeeMapper.insert(employee);

    }

    /**
     * 分页查询
     * @param employeePageQueryDTO
     * @return
     */
    public PageResult pageQuery(EmployeePageQueryDTO employeePageQueryDTO) {
        //select * from employee limit 0,10
        PageHelper.startPage( employeePageQueryDTO.getPage(),employeePageQueryDTO.getPageSize() );


        Page<Employee> page = employeeMapper.pageQuery();

        return new PageResult(page.getTotal(),page.getResult());
    }


    public void startOrStop(Integer status, Long id) {
//        Employee employee = new Employee();
//        employee.setStatus( status );
//        employee.setId( id );
        Employee employee1 = Employee.builder()
                        .status( status )
                                .id( id )
                                        .build();
        employeeMapper.update(employee1);
    }

    /**
     * 根据id查询员工信息
     * @param id
     * @return
     */

    public Employee getById(Long id) {
        Employee employee = employeeMapper.getById(id);
        employee.setPassword( "****" );
        return employee;
    }

    /**
     * 修改员工信息
     * @param employeeDTO
     */
    public void update(EmployeeDTO employeeDTO) {
        Employee employee = new Employee();
        BeanUtils.copyProperties( employeeDTO,employee );
//        employee.setUpdateTime( LocalDateTime.now() );
//        employee.setUpdateUser( BaseContext.getCurrentId() );
        employeeMapper.update(employee);
    }

}
